Here's the start of my restoration project for my fzr250 3HX1, I'm gonna be posting a bit just to document the whole process.
Started with a rolling chassis(and engine)basically. Got a few parts but missing a heap

Got it!. Cleaned up all the connections and it was happy. Still need the cdi box to run it, but the starter(solenoid sounds good) is working, the bike is turning over, and there doesn't seem to be any horrific noises coming from the motor (yet).

The horn works too - sounds hilarious, but it sure is a classic jap bike horn.

So uhhh... After I drained the oil at the sump, and saw it was clean, I never bothered to check the oil filter, After I put the spec amount of oil back in I turned over the bike(didn't start, still need the coils and cdi). And oil went everywhere... Turns out there wasn't actually an oil filter in the bike to begin with nor the filter cover, which I failed to notice when draining. I'm kinda questioning why oil never came out of it while it was stationary but yeah, another part I'm missing... Yay.

Anywhere I can get a replacement? Or is there any other bike that has the same cover? (Need parts 1 & 3, but everything is discontinued)

Potentially, yes, but not recently. The bike has had a few owners, the one I bought it off said that he did not personally touch the motor though. His words were "the bike ran before it was disassembled" I haven't had any more response from him as I have been trying to track down any parts he may have left out.

He had it for two years, and I'm not sure how long he had it before disassembling it. So yeah. Not alot of history on it.